Sandbox Breakout / Arbitrary Code Execution in veval
Key facts
- Attack vector
- —
- Privileges required
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- User interaction
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- Attack complexity
- —
- Impact type
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- Confidentiality · integrity · availability
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- Fix status
- No fix listed
No CVSS vector from any source. Fix status from GitHub.
Summary
All versions of `veval` are vulnerable to Sandbox Escape leading to Remote Code Execution. The package fails to restrict access to the main context through `this.constructor.constructor` . This may allow attackers to execute arbitrary code in the system. Evaluating the payload `this.constructor.constructor('return process.env')()` prints the contents of `process.env`. ## Recommendation No fix is currently available. Consider using an alternative package until a fix is made available.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | veval (npm) | 0.0.0 and later | — | No fix listed | GHSA-54qm-37qr-w5wq |
- veval (npm) Vendor— Affected 0.0.0 and later Fixed in — No fix listed GHSA-54qm-37qr-w5wq
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-03 Threatist record created from GHSA-54qm-37qr-w5wq
References
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences